Uptwister



July 12,v 1960 vFiled Oct. 2, 1959 H. A. BATTY ETAI- UPTWISTER 2 Sheets-Sheet 1 July 12, 1960 H- A, BATTY ETAL 2,944,382

` UPTWISTER Filed Oct. 2, 1959 2 Sheets-Sheet 2 f5 57g 2 224/ Unite UPrWIsTER Harry A. Batty, Lexington, Va., and Thomas G. Pullen III, Winston-Salem, N.C., assignors to James Lees and Sons Company, Bridgeport, Pa., a corporation of Pennsylvania Filed Oct. 2, 1959, Ser. No. 843,988

3 Claims. (Cl. 57-62) high turns per inch create a speed differential between the spindle and the friction rolls which results in broken ends and substantial downtime whenever the twister is shut down. This condition is-directly or indirectly traceable to the friction rolls starting take-up yarn at once when the main switch is closed,'whereas the spindle requires a certain time interval to come up to speed.

States Patent O Referring now to Figure 2, the main motor 30 drivesl the main Yshaft 31 journaled'in frame-members 32 and 33 through-belts 34, 34 andpulleys 35, 36. ,The spindle belt drive splits in the twister frame and drives two shafts 10 and 10a along each side of the twister frame. A pinion 40 is connected to shaft 31 between bearings 32 and 33 and drives countershaft 41 through a large spur gear 42 keyed to shaft 41. A magnetic clutch assembly 43 is connected at one side to gear 42 by means of bolts 44, 44 and to the take-up roll drive shaft 45 on the other side. Countershaft 41 and the take-up roll guide shaft 45 are journaled in a sub-frame assembly 47 in pillow blocks 48 and 49. The take-up roll drive shaft also separates to drive individual series of take-up rolls through shafts 22 and 22a.

Referring to Figure 3, the current for main motor 30 s supplied from the line 55 through main switch S6 Also, when the machine is stopped, a certain overrunning of the spindles takes place, thus creating a slack condition with =lower twist and broken ends.

The primary object of the present invention is to provide a starting device for an uptwister which permits the spindles to achieve full speed before starting the take-up roll drive;

A further object of the invention is to provide a clutch in the take-up roll -drive of an uptwister and means responsive to actuation of the starting switch to delay engagement of said take-up roll drive clutch.

Further ob-jects will be apparent from the specification and drawings in which: t

Figure 1 is a fragmentary sectional view showing one of a series of spindles, spindle drives, and friction takeup rolls as installed on an uptwister for spinning carpet yarns,

Figure 2 is a schematic top view of the main motor and the drive mechanism for the spindle belt shaft and the take-up roll drive shaft, andv Figure 3 is a wiring diagram showing the control system for the magnetic clutch of Figure 2.

The invention comprises essentially the provision of an electromagnetic clutch connected `between the main motor drive shaft and thel take-up roll drive shaft together with a time delayrelay and transformer for actuating the electromagnetic clutch at a controlled period after the spindle belt drive shaft is started.

An uptwister of the type useful in connection with Vthe present invention comprises a frame member 5 on which the spindle 6 is journaled at 7 and retained by means of a nut 8. The spindle is provided with a pulley 9 which is driven from the spindle drive shaft 10 and driving pulley 11 by means of a belt 12. A balloon guard 13 is mounted on bracket 14 which is in turn suspended from the twister frame structure at 15. Yarn from bobbin 16 passes through a twist block 17, pigtail guide 18, and oscillating guide 19 to be wound on the Cone 20 which rests on the friction drive roll 21. A take-up roll drive shaft 22 is interconnected to the spindle drive shaft 10 as will be described more fully hereinafter. Take-up roll 21 is provided `with a friction surface 23 for turning the yarn package 2?. Guide 19 is mounted in a traverse bar 24 which oscillates under control of the builder motion (not shown) as is well known in the art.

and leads 57 and 58. These leads are connected to pairs of contacts 59 and 60 of relay 61 and thence to the motor through leads 62 and 63. When the start button 64 is pressed, a circuit to the armature 65 of the relay is closed thus starting the motor 30. A holding circuit between lead 58l and armature 65 is completed through the normally closed stop switch 66 so that when switch 66 is opened, the circuit is broken to motor 30t The electromagnetic clutch 43 is connected to a transformer 70 through lead 71 and toa time delay relay 72 through lead 73. The armature of relay 72 isiconnected across leads 62 and 63 and the contacts of re- Y in turn ybrings the spindle belt drive shafts 10 and 10a up to speed to rotate the spindles 6 and bobb-ins'16. Within a shortV fractionof time cont-acts 77 of relay 72 close to engage the magnetic clutch 43 thus starting the take-up roll drive shafts 22 and 22a but at a time sufciently after the starting of the spindle shaft 10 to permit uninterrupted drawing of yarn from bobbin 1S and without affecting or decreasing the twist in the yarn. In the absence of the control system of the present invention, it was necessary for the operator to disengage each of the yarn packages 20 with its associated take-up Y roll 21 and then start them individually after the spindles had all reached normal operating speed. This resulted in substantial loss of time and an excessive number of broken yarn ends. The invention is relatively simple and inexpensive and greatly adds to the improved operation and efliciency of yarn twisting machinery.

Having thus described our invention, we claim:

1. In a starting control device for textile twisting frames and the like the combination that comprises a spindle belt drive shaft, a motor directly connected to said spindle belt drive shaft, a take-up roll drive shaft, a countershaft, said take-up roll drive shaft and countershaft being journaled in a sub-frame, a clutch connecting the countershaft and the take-up roll drive shaft,

Patented `July 12, 1960 3. -In a tex-tile yarn twisting frame having a spindle belt drive shaft,ra motor for driving said belt drive shaft, a take-up roll drive shaft, driving connections between the spindle belt `drive shaft and the take-up roll drive shaft, a clutch cooperating with said driving connections, a main relay for the motor, electrical connections between the relay and the motor, a time delay relay clutch.

References Cited in the le of this patent UNITED STATES PATENTS Reichelt Sept. 5, 1939 

